This module is a high-performance analog I/O module for the GE Mark VIe turbine control platform, providing flexible analog input configuration and enhanced high-current analog output capability. It is designed for safety-critical turbine and industrial applications, supporting redundancy, hazardous-area operation, and online maintenance.

Analog Input Specifications

Total Analog Input Channels: 10 configurable channels

Channel Configuration

Channels 1–8:

+5 V / +10 V voltage input

or 0–20 mA current input

Channels 9–10:

+1 mA current input (high-precision small-signal measurement)

or 0–20 mA current input

Input type selection is software configurable, allowing adaptation to sensors from different manufacturers.

Analog Output Specifications

Total Analog Output Channels: 2 current outputs

Channel Output Range Application
Channel 1 0–200 mA High-current actuator drive
Channel 2 0–20 mA Standard actuator control
Communication Interfaces

2 × RJ45 Ethernet ports

Redundant communication

Supports Modbus and EGD protocols

Infrared diagnostic serial port

Local parameter reading and debugging

DC-37 pin terminal board interface

Field signal input/output connection

Power Supply

Supply Voltage: 24 VDC

Typical Power Consumption: ≈ 5 W

Integrated power fault diagnosis and monitoring

Performance Specifications

A/D and D/A Conversion Resolution: 16-bit

Accuracy: ± 0.1 % of full scale (FS)

Mechanical & Environmental Specifications

Form Factor:

Standard Mark VIe I/O module size

Compatible with Mark VIe cabinet slots

Weight: approximately 0.3 kg

Operating Temperature: –30 °C to +65 °C

Hazardous Area Certification:

Class I, Division 2

ATEX Zone 2

Terminal Board Compatibility

IS200STAIH1A

IS200STAIH2A

IS200TBAIH1C

Core Functions and Features
High-Current Output Capability

Channel 1 supports 0–200 mA output

Can directly drive high-load actuators such as:

Valve positioners

Proportional valves

Eliminates the need for external power amplifiers, reducing:

System complexity

Hardware cost

Failure points

High-Precision Signal Processing

16-bit high-resolution conversion with ± 0.1 % accuracy

Accurate acquisition of:

Pressure

Temperature

Flow

Provides reliable data for:

Turbine speed regulation

Load adjustment and control

Redundancy and Security Design

Supports TMR (Triple Modular Redundancy) architectures

Designed to meet industrial SIL safety requirements

Dual-network Ethernet redundancy ensures:

Continuous communication

No data loss during single-network failures

Convenient Diagnostics and Maintenance

GE IS220PAICH2A 336A4940CSP11｜Analog I/O module｜

On-board LED status indicators:

Power

Communication

Fault

Infrared serial port enables local diagnostics

Supports online hot swapping, allowing maintenance without shutdown

Flexible Signal Adaptation

Software-selectable voltage/current inputs

Compatible with a wide range of sensors

Reduces spare-parts inventory and commissioning effort

Typical Applications

Steam and gas turbine control systems

Aeroderivative turbine packages

Valve and actuator control

Balance-of-Plant (BOP) analog signal processing

Safety-critical industrial control systems